Isaac goldkind



(No Model.)

I. GOLDKIND. INUANDESCBNT LAMP SOCKET.

No.zzxvg'gs'sla;fl l Patented July 19, 1892.

W/T/VESSES Y /NVENTOH f/ I l' BY 7 M f f f I l by O ATTO/mgm.

NITED STATES firmare@ ISAAC GOLDKIND, OF NEW YORK, N. Y., ASSIGNOR TOLOUIS STIRN AND JULIUS SOMBORN, OF SAME PLACE.

INCANDESCENT-LAMP SOCKET.

SPECIFICATION forming part of Letters Patent No. 479,359, dated July 19,1892.

Application led December 15, 1891. Serial No. 415,100. (No model.)

To all whom it may concern:

Be it known that I, ISAAC GOLDKIND, a subject of the Emperor of Russia,and a resident of the city of New York, in the county and State of NewYork, have invented certain new and useful Improvements inIncandescent-Lamp Sockets, of which the followingis a specification.

This invention relates to that class of sockets for incandescentelectric lamps in which a switch is arranged for controlling thecurrent, which switch is operated by the downward motion of a lever thatis so arranged as to alternately throw the lamp in or out of circuit, sothat the lamp can be readily lighted or eX- tinguished, even when thesame is in position so that it could not be reached easily, and that thekeys or other switch-operating devices would be inconveniently applied.

The invention consists of a socket for incandescent lamps in which isarranged a switch for throwing the lamp alternately in or out of circuitby the action of an oscillating lever and an intermediate oblong blockthat is alternately moved in or out of contact with contact-springs by aspring-actuated clutch in connection with a suitable pawland-ratchetdevice, as will be fully described hereinafter, and finally pointed outin the claims.

In the accompanying drawings, Figure 1 represents a side elevation of myimproved incandescent-lamp socket. Fig. 2 is a vertical transversesection of the same on line 2 2, Fig. l, on an enlarged scale. Fig. 3 isalso a transverse section of the same, taken on a plane at right anglesto that on which Fig. 2 is taken; and Figsni and 5 are horizontalsections on line 4c t, Fig. 2, showing the lamp respectively switched inand out of circuit.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents thc exterior holder or shell ofmy improved incandescent-lamp socket. In the interior of the same isarranged a cylindrical socket B, of hard rubber or other suitableinsulating material, to the base of which are attached `twocontact-springs C, which extend parallel with each other up through thesocket B and which are connected at their lower ends with theconducting-wires. The upper ends of the contact-springs C form metalliccontact with the conducting-pieces at the lower part or base of theincandescent lamp that is inserted into the socket B. When thecontact-springs are spread apart, the contact with the conducting-pieces is interrupted. Vhen the pressure on the contact-springs isreleased, the same return by their own spring action into normalposition. Spreading or releasing of the contactsprings O is produced bymeans of an oblong block D, which is attached to a spindle or shaft d,that is supported in suitable bearings of the socket B. To

the spindle d is applied a ratchet-wheel e, which is provided with fourteeth, said ratchetwheel being engaged by a spring-actuated check-pawle', that is pivoted to the interior of the socket B, as shown clearly inFig. 3.

At one side of the ratchet-wheel e is arranged one member of a clutch f,which is also provided with four teeth, which are in line with the teethof the ratch et-wheel e and which mesh with a second member of a clutchf', which member is also provided with four teeth, and which is arrangedon the end of a sleeve f2, that is mounted loosely on the spindie d andprovided with a fixed lever F, that extends through a longitudinal slotb Z2 in the socket and holder to the outside of the same. A helicalspring f3 is placed around the sleeve f2 and attached at one end to thelever F and at the opposite end to the iixed bearing of the spindle d,said spring exerting not only a spring action on the lever F, so as toreturn the same into its normal position after the same has been pulledin opposite dirrection to the tension of the spring f3, but which alsoexerts a lateral pressure on the sleeve f2, so as to retain the membersff of the clutch in mesh with each other. The spring thus has twofunctions-namely, the return of the lever F and, secondly, theinterlocking of the members of the clutch device f f. To the outer endof the lever F is attached a chain g, cord, or other suitable device bywhich the same can be pulled in downward direction until it arrives atthe end of the slots b b as shown in dotted lines in Fig. l. By tliusswinging the lever F a distance about equal to the length of a quadrantthe sleeve f2 and IOO the spindle g, to which the sleeve f2 is connectedby the clutch f f', are also moved through a quadrant of a circle, sothat the ratchet-wheel e is turned for the distance of one tooth andlikewise the oblong block D is moved through an angle of ninety degrees.As soon as the downward motion on the lever is released, it is returnedby the spring f2 into its normal position again, in which case thesleeve f2 gives suciently in a lateral direction, so that thespring-actuated member of the clutch f can pass over the member f, thatis applied to the spindle d during the return motion of the lever F. Thecheck-pawl e prevents the spindle d from following the motion of thesleeve f2 during the return motion of the lever F. It thus appears thatthe spindle d and the oblong block D are moved at every downward motionof the lever F through a quadrant of a circle, so that the oblong blockD alternately makes contact with springs, so as to bring the lamp intocircuit, or makes contact and assumes a position parallel with thecontact-springs, so that they return to their normal position and throwthe lamp out of circuit, as no current can then pass to the lamp. Duringthe return motion of the` lever the position of the blockD is notdisturbed, nor is the position of the springs disturbed, as thecheck-pawl c prevents the turn of the spindle d and the block D duringthe return movement of the lever F. The lamp is therefore switched in,while the next downward motion of the lever switches the same out ofcircuit.

The throwing in or out of circuit of the lamp by the oscillating motionof the lever F has the advantage that the switch mechanism can be usedwith lamps which are not convenient to access, as it is not necessary toget up to the lamp for turning a key or other switch device. Access isthereby given to any lamp whatever its position, and the very convenientand reliable switching in and out of the same produced. In case the lampis to be suspended from the holder the entire switching mechanism mustbe reversed, so that it can also be operated by merely pulling the chainor cord. y

Having thus described lny invention, what 5o I claim as new, and desireto secure by Letters Patent, is-

l. The combination of a socket provided with electrical conductors, aspindle arranged between said conductors, an oblong block on saidspindle, a ratchet-Wheel and pawl also arranged on said spindle, alever, and a clutch device interposed between the lever and the spindle,so as to produce the turning of the block when moving the lever indownward direction without turning the spindle when the lever isreturned by its spring in upward direction, subtantially as set forth.

2. The combination, with a socket having electrical conductors, of arotary spindle arranged between said conductors, a block on said spindleadapted to engage or release the said conductors, a ratchet-Wheel onsaid spindle, a check-pawl engaging said ratchet-wheel, a sleeve mountedloosely on said spindle, a lever attached to said sleeve, a helicalspring acting on said lcver and sleeve, and a clutch device between thesleeve and the spindle, substantially as set forth.

In testimony that I claim the foregoing as 75 my invention I have signedmy name in presence of two subscribing witnesses.

ISAAC GOLDKIND.

Witnesses:

A. I. MoRoNEY, CHARLES SCHROEDER.

